Standing valve for oil-well pumps



Jan. 23, 1928.. Y

T. H. E'UBANKS. STANDING VALVE FOR OIL WELL PUMPS.

FILED FEB. 27,1922- i at Patented l en, 23, NEW,-

1 fill.

pliant THOMAS H. EUJBANKS, OF HOSSTON, LOUISIANA.

STANDING VALVE FOB OIL-WELL PUMPS.

Application filed February 27, 1922.

1/ "0 (d5 whom it may concern Be it known that T, Tnoivnis l-l. Ennanns, a citizen of the United. States, residin at Hosston, in the parish of Caddo and do of Louisiana, have invented certain new and useful Improvements in Standing Valves for Oil-Well Pumps, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in standing valves of oil well pumps, and an important object of the invention is to provide in a standing valve means for preventing destruction of the valve body or barrel by the reciprocation of the check valve and the wear due to the passage of the fluid through the barrel.

In the construction of standing valves for use in oil wells a valve barrel is employed which is usually unitary in construction and and is supplied at its upper end with a hardened seat against which the check valve seats. The reciprocation of the check valve during the operation of the pump within the well bore applies a hammering action to the seat which is in turn transmitted to the valve barrel. These barrels in oil wells must of necessity be formed of some material such as brass for the reason that they are subj ectted at intervals to the action of salt water and accordingly would very quickly corrode if formed of any other material. Such materials being soft, the'hammering action of the check valve against the seat has a tendency to upset and wear the body of the barrel, and the seat being formed of hard mate rial, such as steel, due to the action of the salt water and the passage of fluids therethrough becoming worn, it is necessary to replace the entire barrel. Removal and replacement of the seat within the barrel have been attempted but have been found to be unsatisfactory due to the upsetting action upon the soft metal hereinbefore set forth.

An important object of the invention is to provide a barrel formed in separable sections, the uppermost of which carries the valve seat and is replaceable, thereby preventing the necessity of replacing the entire barrel.

Other objects and advantages of the in vention will become apparent throughout the course of the following description.

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention ap utate Serial No. 539,483.

I plied to one form of standing valve and wherein like reference characters designate like parts throughout:

Figure 1 is a side elevation of a valve constructed in accordance with my invention showing the same in position in the lower. end of a pump barrel; and t Figure 2 is a longitudinal sectional view taken therethrough.

Referring now more particularly to the drawings, the numeral 10 indicates a valve barrel, the numeral 11 a check valve cage having threaded engagement with the upper end of the barrel and the numeral 12 a check valve within. the cage which engages against a valve seat 13 carried by the upper extremity of the barrel 10. The lower end of the valve barrel 10 is provided with a conical face 14 which, when the valve is in position in the well, abuts against a conical seat 15 formed upon the lower end of the pump barrel 16. Above this conical portion the valve barrel is reduced to form a shoulder 1'? which opposes the lower end of the ball valve cage 11 and coacts with the lower end 18 of the ball valve cage to provide means for holding and compressing a plurality of packing disks D which are arranged about the intermediate portion of the barrel. The structure hereinbefore described constitutes the ordinary construction of the valve. In accordance with my invention the intermediate portion of the valve is divided, dividing the entire valve barrel into two por tions, a lower portion 19 and an upper portion 20, which have threaded engagement with one another, the engagement "being such that the combined sections provide upon their exterior a smooth cylindrical surface for the reception of the valve disks D. The upper end of the section 20 is screw threaded in the usual manner for the reception of the valve cage.

It will be seen that in the event of the seat becoming worn so as to require replacement and the upper structure of the valve barrel being so battered as to prevent the insertion of a new seat, such upper portion 20 may be replaced at a much lower cost than the cost of an entire barrel, since the upper section is not provided with the conical face 14 which must be ground to fit against the seat 15 of the pump barrel 16. It will likewise be obvious that the sections of the valve barrel will be held together by reason of the fact that thecompression of the packing disks D intermediate the lower end 18 of the ball valve cage and the shoulder 17 will cause these elements to firmly engage against the sides of the sections and against one another. It will furthermore be obvious that the construction and arrangement of the valve may be considerably altered without in any manner departing from the spirit of my invention and I accordingly do not limit myself to the specific structure hereinbefore set forth except as hereinafter claimed.

I claim: v

In a standing valve, the combination with a valve cage and valve, of a valve barrel engaged with the cage and provided at its upper end with a seat for the valve, tree from THOMAS H. EllBnNKS 

